Modeling terahertz radiation from a photoconducting structure

Details Modeling terahertz radiation from a photoconducting structure Modeling terahertz radiation from a photoconducting structure

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3794...25r&link_type=abstract

Proc. SPIE Vol. 3794, p. 25-34, Materials and Electronics for High-Speed and Infrared Detectors, Stephen M. Goodnick; Walter F.

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Accurate characterization of the electromagnetic radiation arising from photoconducting systems is discussed. A computational technique is presented which combines the finite-difference time domain method with a spatial transformation, the Kirchhoff surface integral formulation. The technique enables incorporation of any number of material parameters while accurately accounting for the potentially wide-band nature of the radiation in an efficient computational method. Results are presented demonstrating a more accurate portrait of the radiation arising from a photoconducting structure than has been previously reported. Based on the simulation results, a simple model incorporating equivalent dipole sources is developed. Good agreement is shown between simulation results and measurements of similar structures.

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